HIGHLIGHTS
- who: Ningfei Sun from the after the surface treatment (Supplementary Fig13) verify that surface roughening stimulates the active LSPR of the pristine Au network. Raman mapping in Fig., g provides direct insight into the spatial distribution of the SERS response, demonstrating the robust readout of the chemical tag orthogonal to the physical feature of the plasmonic network. Thus, as a proof-of-concept, the SERS-based chemical information encoded into the hierarchical networks with unique identifiers can also be employed as an auxiliary security layer, enabling the plasmonic network to be a potential multidimensional PUF tag with . . .
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